XXI.

I know not why, but in that hour to-night, Even as they gazed, a sudden tremor came, And swept, as 't were, across their hearts' delight, Like the wind o'er a harp-string, or a flame, When one is shook in sound, and one in sight: And thus some boding flashed through either frame, And called from Juan's breast a faint low sigh, While one new tear arose in Haidée's eye.